<template>
    <div
        class="list"
        ref="wrapper"
    >
        <div>
            <!-- 当前城市 -->
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="button-list">
                    <div class="button-wrapper">
                        <div class="button">{{this.currentCity}}</div>
                    </div>
                </div>
            </div>
            <!-- 热门城市 -->
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="button-list">
                    <div
                        class="button-wrapper"
                        v-for="item of hot"
                        :key="item.id"
                        @click="handleCityClick(item.name)"
                    >
                        <div class="button">{{item.name}}</div>
                    </div>
                </div>
            </div>
            <!-- 城市列表 -->
            <div
                class="area"
                v-for="(item, key) of cities"
                :key="key"
                :ref="key"
            >
                <div class="title border-topbottom">{{key}}</div>
                <div class="item-list">
                    <div
                        class="item border-bottom"
                        v-for="innerItem of item"
                        :key="innerItem.id"
                        @click="handleCityClick(innerItem.name)"
                    >
                        {{innerItem.name}}
                    </div>
                </div>
            </div>
        </div>
    </div>
</template>
<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
    name: 'CityList',
    props: {
        hot: Array,
        cities: Object,
        letter: String
    },
    computed: {
        ...mapState({
            currentCity: 'city'
        })
    },
    methods: {
        handleCityClick (city) {
            // this.$store.commit('changeCity', city)
            this.changeCity(city)
            this.$router.push('/')
        },
        ...mapMutations(['changeCity'])
    },
    mounted () {
        this.scroll = new Bscroll(this.$refs.wrapper)
    },
    watch: {
        letter () {
            if (this.letter) {
                const element = this.$refs[this.letter][0]
                this.scroll.scrollToElement(element)
            }
        }
    }
}
</script>
<style lang="stylus" scoped>
@import '~styles/varibles.styl'
.border-topbottom
    &:before
        border-color #ccc
    &:after
        border-color #ccc
.border-bottom
    &:before
        border-color #ccc
.list
    overflow hidden
    position absolute
    top 1.6rem
    left 0
    right 0
    bottom 0
    .title
        background #f5f5f5
        padding 0.24rem 0.3rem
        color #212121
        font-size 0.24rem
    .button-list
        overflow hidden
        padding 0.1rem 0.6rem 0.1rem 0.1rem
        .button-wrapper
            width 33.33%
            float left
            .button
                margin 0.1rem
                padding 0.1rem 0
                text-align center
                border 0.02rem solid #ccc
                border-radius 0.06rem
    .item-list
        .item
            line-height 0.76rem
            padding-left 0.2rem
</style>
